common: Drop image.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common/image-fdt.c

@@ -14,6 +14,7 @@
 #include <env.h>
 #include <errno.h>
 #include <image.h>
+#include <lmb.h>
 #include <malloc.h>
 #include <linux/libfdt.h>
 #include <mapmem.h>